At this stage it is not clear how or why he came to be walking on the motorway

Sergeant Lee Westhead

Sergeant Lee Westhead, from the serious collision investigation unit of Greater Manchester Police, said: "We are working to establish the full circumstances leading to this young man's death.

"At this stage it is not clear how or why he came to be walking on the motorway.

"Our efforts to identify the man have proved to be unsuccessful, however we believe he may have been to a Tinie Tempah concert at the O2 Apollo in Manchester earlier in the evening.

"We are now appealing for the public to come forward with information to help with our inquiries."

The car was travelling southbound when it hit the person walking in the carriageway between Rivington North Services and Junction 6.

Officers said it is not clear how the man came to be walking on the M61 motorway [GETTY / PIC POSED BY MODEL]

The pedestrian is described as having light brown hair and was aged in his mid twenties.

Mr Westhead added: "We are now appealing for the public to come forward with information to help with our inquiries.

"If you are worried about a friend or relative who has not returned home and who fits the description please get in touch as soon as possible. Similarly, if you saw a man walking on the motorway or have any information as to why he would be there, please get in touch."

• If you have information that could help police then call 0161 856 4741